Geometry and Fluence Effects on Photorefractive Polymer Devices for Holography

Persistent Link:
http://hdl.handle.net/10150/556871
Title:
Geometry and Fluence Effects on Photorefractive Polymer Devices for Holography
Author:
Lynn, Brittany
Issue Date:
2015
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
This work presents the recent advances in photorefractive polymers for use in updatable holographic displays. A model with which to predict the effect of coplanar electrode geometry on diffraction uniformity in photorefractive (PR) polymer display devices was developed. Assumptions made in the standard use cases with constant electric field throughout the bulk of the media are no longer valid in the regions of extreme electric fields present in this type of device. Using electric field induced second harmonic generation (EFISHG) observed with multiphoton microscopy, the physical response in regions of internal electric fields which fall outside the standard regimes of validity were probed. Adjustments to the standard model were made, and the results of the new model were corroborated by holographic four-wave mixing measurements. The recent development of a single mode fiber-based pulsed laser with variable pulse length, energy, and repetition rate has enabled the characterization of photorefractive devices in a previously inaccessible regime located between millisecond and nanosecond pulse recording. A pulse width range of nine orders of magnitude opens the door to device and supporting laser optimization for use in video-rate holographic display. Device optimization has resulted in 5x improvement in single pulse four-wave mixing diffraction efficiencies to 10 - 11.5 % at pulse widths ranging between 6 ns and 100 µs. The grating recording time was likewise reduced by 5x to 16 ms at an applied bias of 72.5 V/μm. These improvements support 30 Hz update rates, which combined with the 3.3 - 10 kHz repetition rate pulsed laser, pave the way for real-time updatable holographic display.
Type:
text; Electronic Dissertation
Keywords:
Diffraction; Holography; Photorefractive Polymer; Optical Sciences; 3D Display
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Graduate College; Optical Sciences
Degree Grantor:
University of Arizona
Advisor:
Norwood, Robert A.; Peyghambarian, Nasser

Full metadata record

DC FieldValue Language
dc.language.isoen_USen
dc.titleGeometry and Fluence Effects on Photorefractive Polymer Devices for Holographyen_US
dc.creatorLynn, Brittanyen
dc.contributor.authorLynn, Brittanyen
dc.date.issued2015en
dc.publisherThe University of Arizona.en
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en
dc.description.abstractThis work presents the recent advances in photorefractive polymers for use in updatable holographic displays. A model with which to predict the effect of coplanar electrode geometry on diffraction uniformity in photorefractive (PR) polymer display devices was developed. Assumptions made in the standard use cases with constant electric field throughout the bulk of the media are no longer valid in the regions of extreme electric fields present in this type of device. Using electric field induced second harmonic generation (EFISHG) observed with multiphoton microscopy, the physical response in regions of internal electric fields which fall outside the standard regimes of validity were probed. Adjustments to the standard model were made, and the results of the new model were corroborated by holographic four-wave mixing measurements. The recent development of a single mode fiber-based pulsed laser with variable pulse length, energy, and repetition rate has enabled the characterization of photorefractive devices in a previously inaccessible regime located between millisecond and nanosecond pulse recording. A pulse width range of nine orders of magnitude opens the door to device and supporting laser optimization for use in video-rate holographic display. Device optimization has resulted in 5x improvement in single pulse four-wave mixing diffraction efficiencies to 10 - 11.5 % at pulse widths ranging between 6 ns and 100 µs. The grating recording time was likewise reduced by 5x to 16 ms at an applied bias of 72.5 V/μm. These improvements support 30 Hz update rates, which combined with the 3.3 - 10 kHz repetition rate pulsed laser, pave the way for real-time updatable holographic display.en
dc.typetexten
dc.typeElectronic Dissertationen
dc.subjectDiffractionen
dc.subjectHolographyen
dc.subjectPhotorefractive Polymeren
dc.subjectOptical Sciencesen
dc.subject3D Displayen
thesis.degree.namePh.D.en
thesis.degree.leveldoctoralen
thesis.degree.disciplineGraduate Collegeen
thesis.degree.disciplineOptical Sciencesen
thesis.degree.grantorUniversity of Arizonaen
dc.contributor.advisorNorwood, Robert A.en
dc.contributor.advisorPeyghambarian, Nasseren
dc.contributor.committeememberNorwood, Robert A.en
dc.contributor.committeememberPeyghambarian, Nasseren
dc.contributor.committeememberWright, Ewanen
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